Hi
I recently had the connectivity module retro fitted to my 2020 Tiger 800 XRT. I use a Shark Evoline 3 Helmet with a Cellularline Urban Bluetooth Headset and I have no issues at all. I live close to the Triumph factory in Hinckley UK and after speaking to my local dealer they say that Triumph have been having issues with the connectivity unit but are regularly doing updates. One strange issues is that the front heated seat stops working but the rear works as normal ??
If you are really unsure then check with the shop to see if you can connect the headset before buying, but in the main i reckon most will work with no problem.